Measurement of the inclusive $t\bar{t}$ production cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV and determination of the top quark pole mass

Abstract

The inclusive cross section of top quark-antiquark pairs produced in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV is measured in the lepton$+$jets and dilepton decay channels. The data sample corresponds to 9.7 fb${}^{-1}$ of integrated luminosity recorded with the D0 detector during Run II of the Fermilab Tevatron Collider. Employing multivariate analysis techniques we measure the cross section in the two decay channels and we perform a combined cross section measurement. For a top quark mass of 172.5 GeV, we measure a combined inclusive top quark-antiquark pair production cross section of ${\sigma }_{t\bar{t}}=7.26\pm 0.13(stat.){}_{-0.50}^{+0.57}(syst.)$ pb which is consistent with standard model predictions. We also perform a likelihood fit to the measured and predicted top quark mass dependence of the inclusive cross section, which yields a measurement of the pole mass of the top quark. The extracted value is $m_t=172.8\pm 1.1(theo.){}_{-3.1}^{+3.3}(exp.)$ GeV.

Published

References in corpus (15)

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• Non-perturbative QCD Effects and the Top Mass at the Tevatron
• Design and Implementation of the New D0 Level-1 Calorimeter Trigger
• Measurement of the top quark pair production cross section in the lepton+jets channel in proton-antiproton collisions at $\sqrt{s}$=1.96 TeV
• NNNLO soft-gluon corrections for the top-antitop pair production cross section
• Measurement of the ttbar production cross section in pbarp collisions at sqrt(s) = 1.96 TeV using secondary vertex b tagging
• Precision measurement of the top-quark mass in lepton+jets final states
• The D0 Silicon Microstrip Tracker
• Precision measurement of the top-quark mass in lepton+jets final states

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